1: (0 3 7)

(0)(1 20 2)(3 19 17 8 7 21 12 10 5)(4 9 6)(11 15 13)(14 18 16)

2: (5 7 21)

(0)(1 20 2)(3 19 17 8 7)(4 9 6)(5 12 10)(11 15 13)(14 18 16)(21)

3: (4 9 6)

(0)(1 20 2)(3 19 17 8 7)(4)(5 12 10)(6)(9)(11 15 13)(14 18 16)(21)

4: (3 19 7)

(0)(1 20 2)(3)(4)(5 12 10)(6)(7 17 8)(9)(11 15 13)(14 18 16)(19)(21)